Segmentation by type of biosimilar insulin classifies products according to pharmacokinetic profile, which directly influences formulary placement and volume‑based pricing. Rapid‑acting biosimilars, designed for mealtime coverage, represent roughly 25 % of the market; their adoption is accelerated by pump‑compatible formulations and the need for flexible dosing. Short‑acting analogues, such as biosimilar lispro, hold about 20 % share, serving patients who require a quicker onset than regular human insulin but do not need ultra‑rapid kinetics. Intermediate‑acting preparations, primarily biosimilar NPH, occupy close to 15 % of sales, largely in cost‑sensitive regions where legacy regimens remain standard. The largest slice, approximately 35 % of total revenue, belongs to long‑acting basal biosimilars (glargine, degludec equivalents), driven by the shift toward basal‑only strategies and the growing prevalence of once‑daily dosing preferences. The remaining 5 % is captured by mixed‑action co‑formulations that combine basal and rapid components, a niche that supports simplification of injection schedules. Together, these type‑based segments delineate the competitive landscape and dictate R&D investment priorities across the biosimilar insulin market.